Electric furnace.



B. STASSANO;

v ELEG'TRIG FURNACE.

APPLICATION nun) NOV. 29, 1912.

Patented Apr. 22, 1913.

ERNESTO STASSANO, OF TURIN, ITALY.

ELECTRIC FURNACE.

' Specification of Letters Patent.

Patented Apr. 22, 1913.

Application filed November 29, 1912. Serial No. 734,092.

'1 '0 all whom it may concern Be it known that I, EnNns'ro STASSANO,residing at Turin, Italy, have invented certain new and usefulImprovements in 'Electric Furnaces, of which the following is aspecification.

This invention-consists in improvements in electric furnaces, and hasfor its object improved means for suspending the furnace chamber,whereby a simple oscillatory movement of the chamber gives rise to acomplete stirring of the molten mass of metal contained in the chamber.

In my U. S. Patent No. 1,02%657 of April 30, 191:2, the suspension of.the chamber was effected by mounting the casing, which surrounds thechamber, by means of a pair of.

pivots, 'on a ring which in turn was mounted on fixed supports throughthe agency of a second pair of pivots positioned at 90 with respect tothe first named pivots. This arrangement is, however, attended withditliculties, which are obviated by the construction which is thesubject of this invention.

On the accompanying drawing is shown by Way of example, one form ofconstruction according to this invention, Figure 1 being an elevation ofan improved mounting for the furnace chamber; Fig. 2 an elevation atright angles to that in Fig. 1; and Fig. 3 a plan showing the transversemember of the suspension device.

In the drawings, the casing 1 which envelops thefurnace chamber, carriestwo fixed stirrups 9 constituting at their upper parts'supports 10 forthe reception of the pivots 11 on the end of a cross member 12 having onits sides other pivots 11 situated at right angles to pivots 11 andmounted in bearings 13 which are carried by an upper cross member orappropriate framework. The suspension device thus comprises a single barprovided with two pairs of pivots, one pair being at its ends and onepair on its sides; this bar may be of simple construction and thenecessary strength for it .is easily calculated.

An oscillatory or turning movement may be communicated to the chamber bymeans of the tooth wheel 17 which carries a part 19 adjustably'mountedor otherwise and provided with a projection'15 that fits into a ring orsocket 16 fixed to the bottom of the casing 1. The wheel 17 may beactuated by a pinion 18 driven by a suitable motor.

What I claim as my invention and desire to secure by U. S. Patent is 1.In an electric furnace, a melting chamber, a suspension member havingtwo pairs of pivots at 90 from each other, arms for suspending themelting chamber to a pair of opposite pivots of the suspension member,supports for mounting the other pair of pivots of said suspensionmember, and means for imparting a circular conical inotion'to the axisof the melting chamber.

2. In an electric furnace, a closed melting chamber arranged .in acasing, a. suspension member having two pairs of pivots at 90 from eachother, arms for suspending the said casing to a pair of opposite pivotsof the suspension member, supports for mounting the other pair of pivotsof said suspension member, and means for imparting a circular conicalmotion to the axis of the melting chamber.

3. In an electric furnace, a melting chamber arranged in a casing, anupper cross bar, two pivots at the ends of said cross bar, suspensionarms mounted on said pivots and connected to the casing of the meltingchamber, two pivots on the sides of the said cross bar and forming aright angle with the other pivots, supports for mountingsaid pivots andmeans for imparting a circular conical motion to the axis of the meltingchamber.

4. In an electric furnace, a melting chamber, a suspension member havingtwo pairs of pivots at 90 fromeach other, arms for suspending themelting chamber to a pair of opposite pivots of the suspension member,supports for mounting the other pair of pivots of said suspensionmember, an arm depending axially from the lower end of the chamber andengaged by a rotating member in an eccentric point of said rotatingmember.

5. In an electric furnace, a closed melting chamber arranged in acasing, a suspension member having two pairs .of pivots at 90 from eachother, arms for suspendmg the said casing to a pair of opposite pivotsof the suspension member, supports formounting the other pair of pivotsof said suspension member, an arm depending axially from the lower endof the casing'of the melting chamber and engaged by a rotating member'inan eccentric point of said rotating member.

6. In an electric furnace,-a melting chamher arranged in a casing, anupper cross bar, 1

two pivots at the ends of said cross bar, suspension arms mounted onsaid pivots and connected to the casing of the melting chamber twopivots on the sides of the said cross ban and forming a right angle withthe other pivots, supports for mounting said pivots, an arm dependingaxially from the lower end of the casing of the melting chamber andengaged by a rotating member in an eccentric point of said rotatingmember.

7. An electric furnace flexibly suspended from above, and means forimparting a rotary oscillation to said furnace.

8. An electric furnace flexibly mounted in a support, and means forcircularly ()S(.lllatingsaid furnace so that its axls describes I a conethe apex of which is above said furnace.

9. An electric furnace flexibly suspended 20 10. An electric furnaceflexibly mounted in a support, and means for so oscillating said furnacethat its axis describes a cone the apex of which is in said support.

In testimony whereof I allix my signature in presence of two witnesses.

' ERNEJTO SlASS-MYO. Witnesses:

CARLO TORTA, J OCELYX Goonnrnn"

